Duke Energy has been paying dividends steadily for 20 years. During that? time, dividends have grown at a compound annual rate of 6?%. If Duke? Energy's current stock price is ?$76 and the firm plans to pay a dividend of ?$ 6.10 next? year, what is? Duke's cost of common stock equit?y?
Duke's cost of common stock equity is %. (Round to two decimal? places.)